Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f984078c2cbfb8c…

MALICIOUS

PDF

40.5 KB Created: 2020-08-13 23:19:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85d5e777ad33e5d5627dfbcfcdde7e7b SHA-1: c159b11a79c5f197425f35af2d83124eb24d0509 SHA-256: 1f984078c2cbfb8c8c7be200f9b21569c21397b7d884bba45f4716b545bba243
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=erik+erikson+theory+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, also contains the same malicious URL. This suggests the primary intent is to redirect the user to a malicious site, likely for phishing or malware distribution.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=erik+erikson+theory+pdf
    • http://files.jrjcounselling.com/uploads/1/3/1/8/131856567/lanibegulegutox_zikeb_mirup_xamabe.pdf
    • http://files.darebritannia.com/uploads/1/3/1/0/131070911/6552364.pdf
    • http://files.drumcrimewatch.com/uploads/1/3/1/3/131384127/foxowuvovexami_gatefutazeziri.pdf
    • http://miriw.fremontlocalfoods.org/uploads/1/3/2/3/132302921/dd3e153a5e6869.pdf
    • http://files.royalgymnasticsmobile.com/uploads/1/3/1/4/131437676/zakefibosedejozoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/muzivelupupunujitajexok.pdf
    • https://cdn.shopify.com/s/files/1/0433/7867/1783/files/candlestick_continuation_patterns.pdf
    • https://cdn.shopify.com/s/files/1/0443/8884/3686/files/frente_bizarre_love_triangel.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/tovolilunusixifegif.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/binary_tree_traversal.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/75057516948.pdf
    • https://cdn.shopify.com/s/files/1/0439/6508/7902/files/mawenuxavebas.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/80333410223.pdf
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/robeka.pdf
    • https://cdn.shopify.com/s/files/1/0433/5910/9279/files/39849994944.pdf
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/benadeka.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006249.bin
c8914d4097ad94867771acbbc10f5b91ef989d8c12787a75ee62b4a1dc3ecffd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6249 5012 bytes
font_01_sfnt_off0000735c.bin
d959115a3f43656d50be1c87c43eb202525266a99bcaed2bbcf2d10e6a46d8f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x735C 9920 bytes

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